re icsp directly from mcs see below, a snap is pretty much a pk4, microchip cmd-line i/f for programmers is pretty standard(ish) [for microchip]
not difficult just awkward
https://www.picbasic.co.uk/forum/sho...t=command+line
also
https://support.melabs.com/forum/pic...ity-board-pkob

and hardly worth the effort